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Title
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Low-temperature chemical synthesis of high-purity diacylglycerols (DAG) from monoacylglycerols (MAG)
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Author
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Abstract
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| A chemical method was developed for lowtemperature synthesis of DAG from MAG followed by an easy purification procedure in order to obtain high-purity DAG. Solvent-assisted and solvent-free reaction conditions were used, combined with different catalysts (sodium methoxide, p-toluenesulfonic acid, methanesulfonic acid, and sulfuric acid). All reactions were performed at 35 and 70 °C. By increasing both acidity and polarity of the catalyst the equilibrium shifts towards the formation of DAG. When using sulfuric acid in solvent-assisted condition at 70 °C, 88 % conversion was obtained after 20 min of reaction (77 % w/w DAG in the reaction mixture after evaporation of the solvent). After purifying by means of column chromatography, 96 % pure DAG were obtained. The overall yield of DAG was 81 %. |
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Language
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English
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Source (journal)
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Lipids / American Oil Chemist's Society. - Berlin
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Publication
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Berlin
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2014
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ISSN
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0024-4201
[print]
1558-9307
[online]
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DOI
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10.1007/S11745-014-3980-X
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Volume/pages
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(2014)
, p. 1-8
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ISI
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000348442700010
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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